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The purpose is to immediately prevent the cabin altitude from increasing, in order to avoid the
activation of an altitude-sensitive bomb.
CAB ALT......................................................................................................................MAINTAIN
Use MAN V/S CTL selector to maintain the cabin altitude at the value it had when the bomb
was discovered.
CABIN CREW..................................................................................................................NOTIFY
ATC/COMPANY OPERATIONS......................................................................................NOTIFY
To obtain expert advice from explosive specialists.
FUEL RESERVES...................................................................................................DETERMINE
Keep in mind that when flying at cabin altitude + 2 500 ft, fuel consumption in CONF 1, with
landing gear down, will be about 2.1 times that consumed in clean configuration.
NEXT SUITABLE AIRPORT....................................................................................DETERMINE
FCU SPEED SELECTION KNOB................................................................... PULL AND TURN
Select the most appropriate speed, taking into account the time to destination, the fuel
consumption and the fact that low speed could reduce the consequences of possible structural
damage, if the bomb explodes.
DESCENT TO CAB ALT + FT or MEA or minimum obstacle clearance altitude.................
......................................................................................................................................INITIATE
Descending to 2 500 ft above the cabin altitude gives a cabin differential pressure of
approximately 1 PSI, which helps to ensure that the blast goes outwards, if the bomb
explodes.
AVOID SHARP MANEUVERS
Which might result in the bomb moving.
CAB ALT......................................................................................................................MAINTAIN
Use MAN V/S CTL selector to maintain the cabin altitude. Initially brief UP input should be
required; but, be careful not to increase the cabin altitude.
When at CAB ALT + 2 500 ft:
1 PSI DELTA P.....................................................................................................MAINTAIN
Use MAN V/S CTL selector to adjust delta P to 1 PSI. Brief DN input should be initially
required to set 0 ft/min cabin vertical speed.
GALLEY.........................................................................................................................OFF
To be continued on next page
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
MISCELLANEOUS
A318/A319/A320/A321 FLEET PRO-ABN-80 P 50/182
FCOM 19 AUG 10
BOMB ON BOARD (Cont'd)
When the bomb is secured at the LRBL or cannot be moved:
EMER EXIT LT.......................................................................................................... ON
To recover minimum cabin lighting when the COMMERCIAL pb-sw will be switched
OFF
COMMERCIAL..........................................................................................................OFF
FLAPS (fuel permitting)..........................................................................AT LEAST CONF 1
For landing, use normal configuration.
LANDING GEAR (fuel permitting, except for flight over water).............................................
.................................................................................................................................. DOWN
The detonation could damage the landing systems. Therefore, if fuel permits, configure
the aircraft for landing as soon as possible. Reducing the speed will minimize stress on the
aircraft structure.
For any other steps of descent:
1 PSI DELTA P.....................................................................................................MAINTAIN
Use MAN V/S CTL selector to DN to adjust delta P to 1 PSI.
During approach:
CABIN PRESS MODE SEL......................................................................................... AUTO
This allows CPC to automatically control the cabin altitude to 0 during final approach.
When the aircraft is on ground and stopped in a remote area (if possible):
If Evacuation required:
EVACUATION...................................................................................................INITIATE
Avoid exits and exiting on the same side as the bomb and near the bomb.
Announce an appropriate command such as “PASSENGER
EVACUATION-EVACUATE THROUGH LH or RH DOORS” using the Passenger
Address (PA) system, and press the EVAC COMMAND pb.
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 11(43)
